In the service boxes, there are icons referenced in the original text. I looked to see if there is a directory of images beyond what you have put in as placeholders but was not able to find anything in your theme documentation. Where can I find a list of the available icons and what their “names” are?

Also, the circle that surrounds the icon seems to be embedded so it cannot removed. Is this correct?

My first preference would be to remove the icon completely as I plan to put small videos in the boxes but if this cannot happen, I would want to put some sort of icon/image that would be fitting.

You can add the icons to the services boxes and all the icons are coming from the font awesome so if you want to add other icons you need to add the name of that icon in icon parameter in the shortcode.